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arXiv:cond-mat/0107129 · The European Physical Journal B

Bose-Einstein transition in a dilute interacting gas

Gordon Baym, Jean-Paul Blaizot, Markus Holzmann, Franck Laloë, D. Vautherin

Published Nov 1, 2001• 92 citations
arXivHTMLPDF
DOI
10.1007/s100510170028

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Due to the observation of Bose-Einstein condensation in dilute atomic 87^{87}87Rb and 23^{23}23Na vapors last year, there is currently a great interest in the properties of a degenerate Bose gas. One aspect that is not yet understood is the effect of the interatomic interactions on the critical temperature of the phase transition. We present here a renormalization group study of the weakly-interacting Bose gas and predict the critical temperature at which Bose-Einstein condensation occurs as a function of the (positive) scattering length aaa of the interatomic potential.